Do Monocular Tilt and Spatial Frequency Aftereffects Induce the Binocular Perception of Inclination and Slant?
Do Monocular Tilt and Spatial Frequency Aftereffects Induce the Binocular Perception of Inclination and Slant?
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单眼倾斜和空间频率后效应是否会引起双眼对倾斜和倾斜的感知？
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发表时间：
1996
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影响因子：
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通讯作者：
B. Rogers
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作者：
M. Bradshaw;B. Rogers
长时间观看一组倾斜的线可能会影响具有不同物理取向的第二组线的感知取向（倾斜后效）。类似地，延长观看特定空间周期性的一组线可能影响具有不同物理周期性的第二组线的感知周期性（空间频率偏移后效）。我们研究了是否由单眼倾斜或空间频率后效引起的双眼差异可以分别引起三维倾斜或倾斜的感知。观察者适应单眼模式（直径5度）安排在一个垂直的哑铃配置在二视交替。适应模式在方向（±6.25°或±11.25°）或空间频率（±0.5或±0.75倍频程）上与测试表面不同，该测试表面包括4个周期deg−1的垂直线。适应期为3 min。观察员判断测试表面是否出现（i）形成深度凸或凹铰链（适应倾斜后），或（ii）围绕垂直轴向相反方向倾斜（适应周期性后）。使用相对倾斜/倾角判断可能比单个表面的深度匹配或归零更敏感（例如Sloane和Blake，1987 Perception & Psychophysics 42 569 - 575）。我们的研究结果表明，（i）在单独的单眼图像感知周期的差异不会引起立体倾斜的印象（确认斯隆和布莱克的结果）和（ii）在单独的单眼图像感知方向的差异不会引起立体倾斜的印象。
Prolonged viewing of a set of tilted lines can affect the perceived orientation of a second set of lines with a different physical orientation (tilt aftereffect). Similarly, prolonged viewing of a set of lines of a particular spatial periodicity can affect the perceived periodicity of a second set of lines with a different physical periodicity (spatial frequency shift aftereffect). We investigated whether a binocular difference resulting from monocular tilt or spatial frequency aftereffects could induce the perception of 3-D inclination or slant respectively. Observers adapted to monocular patterns (5 deg in diameter) arranged in a vertical ‘dumbbell’ configuration in dichoptic alternation. The adapting patterns differed in either orientation (±6.25° or ±11.25°) or in spatial frequency (±0.5 or ±0.75 octaves) from a test surface comprising vertical lines at 4 cycles deg−1. The period of adaptation was 3 min. Observers judged whether the test surfaces appeared to (i) form a convex or concave hinge in depth (after adaptation to tilt), or (ii) to slant in opposite directions about a vertical axis (after adaptation to periodicity). Using a relative slant/inclination judgment may be more sensitive than depth matching or nulling of a single surface (eg Sloane and Blake, 1987 Perception & Psychophysics 42 569 – 575). Our results suggest that (i) differences in perceived periodicity in separate monocular images do not induce the impression of stereoscopic slant (confirming the results of Sloane and Blake) and (ii) differences in perceived orientation in separate monocular images do not induce an impression of stereoscopic inclination.